Festool 485298 RAS 115 Fiberfix Sanding Pad, 90mm (4 1/2 in) Soft pad for most surfaces and sanding applications, 115mm diameter FiberFix pad enables use of 4-1/2 inch fiber discs and abrasives Solid sheet abrasive (no holes) enables maximum abrasion on the toughest surfaces, while a tool-integrated dust shroud maximizes dust extraction Mechanical, threaded fastening secures the pad for aggressive sanding applications. Festool pads utilize a highly-resilient, heat-resistant MPE foam for consistent finishing results, uniform wearing, and extended pad life.